Comparison of oestradiol and prostaglandin E2 vaginal gel for ripening the unfavourable cervix.
D004958:Estradiol / Q000494:pharmacology*; D005260:Female; D006801:Humans; D007751:Labor, Induced / Q000379:methods*; D011247:Pregnancy; D011458:Prostaglandins E / Q000494:pharmacology*
D011458:Prostaglandins E; D004958:Estradiol